Wang, Lung-Jen (National Pingtung Institute of Commerce, Taiwan)
Truong, Trieu-Kien (I-Shou University, Taiwan)
The cubic-spline interpolation (CSI) yields a very accurate algorithm for decimation and interpolation processes. In this paper, it is shown that the CSI scheme can be used with quantizer selection to reduce the blocking effects of MPEG-4 decompressed image. Furthermore, the quantizer selection based on the rate-distortion optimization algorithm can generate an adaptive quantization for the CSI scheme. Finally, the proposed algorithm can achieve a better subjective and objective performance than that of the standard MPEG-4 algorithm for video coding.